Native calls: answer MUTED by default (house rule)

Plugin connects the LiveKit room without enabling the mic (nothing captured/
published until the user taps Mic, which is also when iOS asks permission).
Web: meetMic starts false so the mic button shows muted; on callConnected the
web pushes the muted state to the plugin so builds whose plugin still connects
the mic live are muted too.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mobile/plugins/native-call/ios/Sources/NativeCallPlugin/NativeCallPlugin.swift

@@ -66,7 +66,10 @@ public class NativeCallPlugin: CAPPlugin, CAPBridgedPlugin, PKPushRegistryDelega
             await old?.disconnect() // drop any previous/stale connection so we never leave DUPLICATE participants
             do {
                 try await r.connect(url: url, token: token)
-                try await r.localParticipant.setMicrophone(enabled: true)
+                // House rule: answer MUTED. Not enabling the mic here means nothing is captured/published
+                // until the user taps Mic in the meeting UI (→ setMuted(false) → setMicrophone(true)), which
+                // is also when iOS asks for mic permission. Playback (hearing others) is unaffected.
+                try await r.localParticipant.setMicrophone(enabled: false)
                 self?.notifyListeners("callConnected", data: ["ok": true])
             } catch {
                 self?.notifyListeners("callError", data: ["error": String(describing: error)])